Electric switch



A. RPSWOBODA ELECTRIC SWITCH. APPLIQAT QN I'ILED MAR. a, 1905.

PATENTED APR. 14} 1908.

2 SHEETBSHEET 1.

PATENTED APR. 14, 1908.

' A, R. SWOBUDA.

ELECTRIC SWITCH. APPLICATION FILED MA'R. 8, 1905.

2 SHEETS-SHEET 2.

To all whom it may concern:

ADOLPH R. SWQBODA, OF LOUISVILLE, KENTUCKY.

Specification of Letters Patent.

ELECTRIC SWITCH.

Patented April 14-, 1908.

Application filed March 8, 1905. Serial No. 249,004.

Be it known that I, AnoLPH R. SwoBonA, a

citizen of the United States of America, re-

- siding at Louisville, in the county of Jelierthe circuit is closed;

son and State of Kentuck have invented certain new and useful l mprovemcnts in lulectric Switches, of which the following is a description.

My invention belongs ,to that class of devices relating to electric circuit making and circuit breaking devices, and-has for its object'the production of a cheaper and more efficient switch for elcctrical purposes. The resiliency of the blade allows it to conform to the part'into which it fits when the circuit is closed giving a smooth and perfect contact. Greater strength and increased radiating surface are obtained from the amount of material used as compared with the ordinary form of switch blade. Also by this construction one end of the blade can be conveniently and efiicie'ntly pivoted to a fixed member, and a handle attachedin one effective and con venient manner to the other end for either a single or multipolar switch.

To this end my invention consists in the novel construction, arrangements and combination of parts herein shown and described, and 'rnore particularly pointed out in the claimsv In the drawings, wherein like reference characters indicate like or corresponding parts; Figure 1 is a view in elevation of a sinle pole switch. Fig. 2 is a section taken on ine 2-2 of Fig. 1. one end of the blade showing means for fastening the handle, part of the blade being broken away. Fig. 4 shows the blade 'as unched before it is bent into shape, Fig. 5 1s a, .plan View of a multipolar switch: Rig. 6

shows the preferred shape of blade as punched for the side bars on a In'ulti'polar switch. Fig. 7 is a View in elevation of a multipolar double throw switch. Fig. 8 is a view insection taken on line 88 of Fig. 7. .Fig. 9 is a view in section taken on line Fl -9 of Fi 7', andFig. 10 is a plan view of a three po e double throw switch.

As shown in the drawings, 1. is a switch blade connecting a supportingstandard 9 Fig. 3 is a plan view of' with a cooperating 'stanr ard or clip when i porting standard 2 are insulated lromrach other in any suitable way preferably by makf 2 and 3 may be attached to the base 6m any ing the base 6 of insulating material.

The clip 5, and 'sup- I suitable base which may be similar to that'of as shown in Fig. 2.

shape corresponding to that shown in Fig. 4, and then bent into a substantially Urshape V-shapedconstruction would obviously operate in substantially the same manner, by U-shape I wish to be understood as'including a construction in which the sides are .sub

As a U-shapedand a.

stantially parallel to one another .in c'rosssection or in which the sides slightly diverge from the connecting means, which might tend towards a V-shape. When the blade isrnade slightly V-shaped, andforced into the clip, the sides tend to become parallel to 1 O1 0 and a hole in the standard or other suitable means. It is obvious however, that the ends 4-4 of the blade may be pivoted in the groove of the well known supporting stand ard (not shown). i v i A spring washer 15 or other means may he used toprevent tightening the nut onthe bolt too much, thus causing the blade to bind. In a single pole switch as shown in Fig. 1. the end 12 '12 is bent to embrace a handle 5 made of some insulating material or otherwise suitably insulated from the blade.

The handle may be attached to the blade in.

any lpreferred manner, as shown in Fig. 3 it is he din place by the bolt 18 assing through the holes 14*14. of the bla e, a shoulder 7 preventing a pivotal movement of the handle about the bolt 18..

A supporting standard 2 is made in any convenient form, as shown it is an upright ol thickness permitting it to be embraced by the ends 4-4 of the blade, and provided with a suitable'base. ard 3 is adapted to receive the blade 1, the distance between the bearing surfaces being such as to give good. contact between'the The clip or grooved standblade and the clip, andis provided with a the supporting standard. '.lhese standards The connecting blade '1 is first-made in a l suitable manner shown in the drawings bolts or screws 17 are used. The conductors are attached to the standards in any pre ferrcd manner X' -*8 being shown in the drawin s to receive them.

or a two pole switch the blade is prefer ably formed of a blank substantially as shown in Fig.6, one portion 13 being made longer than the other 13. it is then bent to a substantially U-shape and the ends 13 and 13 are bent in. form substantially as shown in Fig. 5 to embrace a cross-bar between them and fastened thereto by bolts 16, or other convenient means. The blades 1--1 are suitably insulated from each other by using an insulating material for the cross-bar 9 or other insulating means. A handle51naybe fastened to the cross-bar in any convenient way, as shown in the drawings a bolt and nut 19 is used, the other end of the bolt being secured to the handle 5. switch, consisting of more than two b ades the two outside blades are preferably formed and attached to the cross-bar 9 substantially as shown in Fig. 5, while the intermediate blades are fastened to the cross-bar as shown by the middle blade'in Fig. 10, where the ends 12" 12 are bent at rightangles to the blade and fastened to the cross-bar by bolts 16 lGorany preferred means.

In Fig. 7 is shown a double throw switch, having two cli s 3 3 for each blade. clips may be 0 the form in Which the receiving oove is similar to that shown in Fig. 2,

- or t e preferred form 3 3 shown in'Figs. 8 and 9. In either casein the double throw switch it is preferable to round the corners of the blade as shown at Joints 2020 in Fig. 9. Having thus descri ed my improvement, it is obvious that various immaterial modi For a multi olar' The fications may be made without departing from the spirit of my invrn'ition, hence I do not wish to be 111 (lCl'StuUll. limiting myself to the exact forlii and construction shown.

What I claim as new and desire to secure by Letters Patent is:

1. A rnultipolar switch of the character described including oppositely disposed double coi'itacting blades, each of said blades consisting of a strip of metal bent longitudinally to form substantially U-shaped mem bers, the inner arms of said U-shaped members being laterally offset and engaging the inner surface of a connecting bar extending between the blades, and the outer arms extending ever the end of said bar and offset to engage the outer surface of the said bar, and means for connectin the offset portions of the arms of the U-s raped members to the bar.

2. A multipolar switch of the character described including oppositely dis )osed doubl'e conlracting blades, each of said blades consisting of a strip of meta bent longitudinally to form substantially U-shaped members, the arms of said U-shaped members having lateralv offset portions arranged to engage respectively opposite surfaces of a connecting bar extending between the blades in combination with the said bar and means for connecting said offset portions thereto.

In testimony whereof, I have hereunto signed my name in the presence of two (2) subscribing witnesses.

ADOLPH R. SWOBODA.

\Vitnesses WM. H. TUMBRINK, LEO F. DOE-N. 

